% Author: Stephan Kregel, DG1HXJ % Year: 2022 \begin{circuitikz}[european] \draw(0,0) coordinate(u0) to [open, straight voltages, v^<={$U_\mathrm{E}$}] ++(0,3) coordinate(o0) to [short, o-*] ++(1,0) coordinate(o1) to [twoport, t={IC1}, -*, name={o2}] ++(3,0) coordinate(o3) to [short, *-o] ++(1,0) coordinate(o4); \draw(u0) to [short, o-*] ++(1,0) coordinate(u1) to [short, -*] ++(3,0) coordinate(u3) to [short, -o] ++(1,0) coordinate(u4); \draw(u4) to [open, straight voltages, v_<={$U_\mathrm{A}$}] ++(0,3) coordinate(o4); \draw (o1) to [ecapacitor] (u1) node[rground](){}; \draw (o3) to [C] (u3); \draw (o2.south) to [short, -*] (o2.center |- u3); \end{circuitikz}